EP3898707A1 - Procédé de production d'un copolymère d'acrylate-hnbr - Google Patents
Procédé de production d'un copolymère d'acrylate-hnbrInfo
- Publication number
- EP3898707A1 EP3898707A1 EP19808598.7A EP19808598A EP3898707A1 EP 3898707 A1 EP3898707 A1 EP 3898707A1 EP 19808598 A EP19808598 A EP 19808598A EP 3898707 A1 EP3898707 A1 EP 3898707A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- acrylate
- peg acrylate
- units
- peg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 47
- 229920001577 copolymer Polymers 0.000 title description 15
- 229920006168 hydrated nitrile rubber Polymers 0.000 claims abstract description 91
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 85
- 229920000126 latex Polymers 0.000 claims abstract description 84
- 239000004816 latex Substances 0.000 claims abstract description 77
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 60
- 230000015271 coagulation Effects 0.000 claims abstract description 20
- 238000005345 coagulation Methods 0.000 claims abstract description 20
- 229920001223 polyethylene glycol Polymers 0.000 claims description 163
- KAKZBPTYRLMSJV-UHFFFAOYSA-N butadiene group Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 67
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 66
- -1 ethoxy, butoxy Chemical group 0.000 claims description 53
- 239000000178 monomer Substances 0.000 claims description 37
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 26
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 25
- 150000002825 nitriles Chemical group 0.000 claims description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- 239000001257 hydrogen Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229910001868 water Inorganic materials 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 239000002202 Polyethylene glycol Substances 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 229910052717 sulfur Inorganic materials 0.000 claims description 12
- 239000011593 sulfur Substances 0.000 claims description 12
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- 239000003446 ligand Substances 0.000 claims description 9
- 150000003254 radicals Chemical class 0.000 claims description 9
- 125000003545 alkoxy group Chemical group 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 7
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 229910052707 ruthenium Inorganic materials 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical group [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 6
- 125000003342 alkenyl group Chemical group 0.000 claims description 6
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 4
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 4
- 125000003282 alkyl amino group Chemical group 0.000 claims description 4
- 125000004390 alkyl sulfonyl group Chemical group 0.000 claims description 4
- 125000004414 alkyl thio group Chemical group 0.000 claims description 4
- 125000000304 alkynyl group Chemical group 0.000 claims description 4
- 125000005133 alkynyloxy group Chemical group 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 4
- 125000005110 aryl thio group Chemical group 0.000 claims description 4
- 125000004104 aryloxy group Chemical group 0.000 claims description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 150000001721 carbon Chemical group 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 125000004644 alkyl sulfinyl group Chemical group 0.000 claims description 2
- 150000005840 aryl radicals Chemical group 0.000 claims description 2
- 150000007942 carboxylates Chemical class 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- HVJJUDAMOHYMRL-UHFFFAOYSA-L dichloro-[(2-propan-2-yloxyphenyl)methylidene]ruthenium Chemical compound CC(C)OC1=CC=CC=C1C=[Ru](Cl)Cl HVJJUDAMOHYMRL-UHFFFAOYSA-L 0.000 claims description 2
- 125000005842 heteroatom Chemical group 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 125000002897 diene group Chemical group 0.000 claims 4
- ADLVDYMTBOSDFE-UHFFFAOYSA-N 5-chloro-6-nitroisoindole-1,3-dione Chemical compound C1=C(Cl)C([N+](=O)[O-])=CC2=C1C(=O)NC2=O ADLVDYMTBOSDFE-UHFFFAOYSA-N 0.000 claims 2
- RUKVGXGTVPPWDD-UHFFFAOYSA-N 1,3-bis(2,4,6-trimethylphenyl)imidazolidine Chemical group CC1=CC(C)=CC(C)=C1N1CN(C=2C(=CC(C)=CC=2C)C)CC1 RUKVGXGTVPPWDD-UHFFFAOYSA-N 0.000 claims 1
- 125000003358 C2-C20 alkenyl group Chemical group 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 30
- 150000001993 dienes Chemical class 0.000 description 28
- 239000000243 solution Substances 0.000 description 23
- 229920000642 polymer Polymers 0.000 description 22
- 229940018560 citraconate Drugs 0.000 description 20
- 238000004132 cross linking Methods 0.000 description 17
- 238000002156 mixing Methods 0.000 description 17
- 238000001556 precipitation Methods 0.000 description 16
- 238000007792 addition Methods 0.000 description 15
- 229920001971 elastomer Polymers 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000005060 rubber Substances 0.000 description 14
- 238000004073 vulcanization Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 238000005406 washing Methods 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 11
- 239000003112 inhibitor Substances 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 9
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 9
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 9
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 9
- 239000000945 filler Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 239000004971 Cross linker Substances 0.000 description 8
- 230000032683 aging Effects 0.000 description 8
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 7
- 150000002763 monocarboxylic acids Chemical class 0.000 description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 235000002639 sodium chloride Nutrition 0.000 description 7
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 6
- 125000005907 alkyl ester group Chemical group 0.000 description 6
- VZCYOOQTPOCHFL-OWOJBTEDSA-L fumarate(2-) Chemical class [O-]C(=O)\C=C\C([O-])=O VZCYOOQTPOCHFL-OWOJBTEDSA-L 0.000 description 6
- 150000002688 maleic acid derivatives Chemical class 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000010948 rhodium Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000012190 activator Substances 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 5
- 150000001991 dicarboxylic acids Chemical class 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 150000002989 phenols Chemical class 0.000 description 5
- 239000004014 plasticizer Substances 0.000 description 5
- 229910052703 rhodium Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 5
- 229960002447 thiram Drugs 0.000 description 5
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 description 5
- CPGFMWPQXUXQRX-UHFFFAOYSA-N 3-amino-3-(4-fluorophenyl)propanoic acid Chemical compound OC(=O)CC(N)C1=CC=C(F)C=C1 CPGFMWPQXUXQRX-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 241001441571 Hiodontidae Species 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 125000004183 alkoxy alkyl group Chemical group 0.000 description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 4
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 4
- 239000003995 emulsifying agent Substances 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 238000005649 metathesis reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229920001897 terpolymer Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 3
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 3
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 3
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 3
- UDQCDDZBBZNIFA-UHFFFAOYSA-N 4-methyl-1,3-dihydrobenzimidazole-2-thione Chemical compound CC1=CC=CC2=C1NC(=S)N2 UDQCDDZBBZNIFA-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 150000001733 carboxylic acid esters Chemical group 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- 239000011995 wilkinson's catalyst Substances 0.000 description 3
- UTODFRQBVUVYOB-UHFFFAOYSA-P wilkinson's catalyst Chemical compound [Cl-].C1=CC=CC=C1P(C=1C=CC=CC=1)(C=1C=CC=CC=1)[Rh+](P(C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)P(C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 UTODFRQBVUVYOB-UHFFFAOYSA-P 0.000 description 3
- AUMBZPPBWALQRO-UHFFFAOYSA-L zinc;n,n-dibenzylcarbamodithioate Chemical compound [Zn+2].C=1C=CC=CC=1CN(C(=S)[S-])CC1=CC=CC=C1.C=1C=CC=CC=1CN(C(=S)[S-])CC1=CC=CC=C1 AUMBZPPBWALQRO-UHFFFAOYSA-L 0.000 description 3
- XKMZOFXGLBYJLS-UHFFFAOYSA-L zinc;prop-2-enoate Chemical compound [Zn+2].[O-]C(=O)C=C.[O-]C(=O)C=C XKMZOFXGLBYJLS-UHFFFAOYSA-L 0.000 description 3
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 3
- QKUGKZFASYQCGO-VOTSOKGWSA-N (e)-4-oxo-4-phenylmethoxybut-2-enoic acid Chemical class OC(=O)\C=C\C(=O)OCC1=CC=CC=C1 QKUGKZFASYQCGO-VOTSOKGWSA-N 0.000 description 2
- QKUGKZFASYQCGO-SREVYHEPSA-N (z)-4-oxo-4-phenylmethoxybut-2-enoic acid Chemical class OC(=O)\C=C/C(=O)OCC1=CC=CC=C1 QKUGKZFASYQCGO-SREVYHEPSA-N 0.000 description 2
- OPNUROKCUBTKLF-UHFFFAOYSA-N 1,2-bis(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N\C(N)=N\C1=CC=CC=C1C OPNUROKCUBTKLF-UHFFFAOYSA-N 0.000 description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 2
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 2
- SQZCAOHYQSOZCE-UHFFFAOYSA-N 1-(diaminomethylidene)-2-(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N=C(N)N=C(N)N SQZCAOHYQSOZCE-UHFFFAOYSA-N 0.000 description 2
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 2
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 description 2
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 2
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 2
- 229940054266 2-mercaptobenzothiazole Drugs 0.000 description 2
- TVONJMOVBKMLOM-UHFFFAOYSA-N 2-methylidenebutanenitrile Chemical compound CCC(=C)C#N TVONJMOVBKMLOM-UHFFFAOYSA-N 0.000 description 2
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- DFQSWFGKYUFIFW-UHFFFAOYSA-N dipropyl 2-methylidenebutanedioate Chemical compound CCCOC(=O)CC(=C)C(=O)OCCC DFQSWFGKYUFIFW-UHFFFAOYSA-N 0.000 description 1
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- CGTGVSBVWWZIDT-UHFFFAOYSA-N isoquinolin-6-yl(trimethyl)stannane Chemical compound C1=NC=CC2=CC([Sn](C)(C)C)=CC=C21 CGTGVSBVWWZIDT-UHFFFAOYSA-N 0.000 description 1
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- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
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- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
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- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
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- QBERHIJABFXGRZ-UHFFFAOYSA-M rhodium;triphenylphosphane;chloride Chemical compound [Cl-].[Rh].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 QBERHIJABFXGRZ-UHFFFAOYSA-M 0.000 description 1
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- 235000017281 sodium acetate Nutrition 0.000 description 1
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- GJPYYNMJTJNYTO-UHFFFAOYSA-J sodium aluminium sulfate Chemical compound [Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GJPYYNMJTJNYTO-UHFFFAOYSA-J 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
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- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 235000010356 sorbitol Nutrition 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
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- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical class [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 229960005349 sulfur Drugs 0.000 description 1
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- 235000012222 talc Nutrition 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- HXOGQBSDPSMHJK-UHFFFAOYSA-N triethoxy(6-methylheptyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCCCC(C)C HXOGQBSDPSMHJK-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- UWSYCPWEBZRZNJ-UHFFFAOYSA-N trimethoxy(2,4,4-trimethylpentyl)silane Chemical compound CO[Si](OC)(OC)CC(C)CC(C)(C)C UWSYCPWEBZRZNJ-UHFFFAOYSA-N 0.000 description 1
- NOYPYLRCIDNJJB-UHFFFAOYSA-N trimetrexate Chemical compound COC1=C(OC)C(OC)=CC(NCC=2C(=C3C(N)=NC(N)=NC3=CC=2)C)=C1 NOYPYLRCIDNJJB-UHFFFAOYSA-N 0.000 description 1
- WGKLOLBTFWFKOD-UHFFFAOYSA-N tris(2-nonylphenyl) phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C(=CC=CC=1)CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC WGKLOLBTFWFKOD-UHFFFAOYSA-N 0.000 description 1
- GRPURDFRFHUDSP-UHFFFAOYSA-N tris(prop-2-enyl) benzene-1,2,4-tricarboxylate Chemical compound C=CCOC(=O)C1=CC=C(C(=O)OCC=C)C(C(=O)OCC=C)=C1 GRPURDFRFHUDSP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- NEYNBSGIXOOZGZ-UHFFFAOYSA-L zinc;butoxymethanedithioate Chemical compound [Zn+2].CCCCOC([S-])=S.CCCCOC([S-])=S NEYNBSGIXOOZGZ-UHFFFAOYSA-L 0.000 description 1
- DRKOTOCDZAUOFY-UHFFFAOYSA-L zinc;n,n-bis(7-methyloctyl)carbamodithioate Chemical compound [Zn+2].CC(C)CCCCCCN(C([S-])=S)CCCCCCC(C)C.CC(C)CCCCCCN(C([S-])=S)CCCCCCC(C)C DRKOTOCDZAUOFY-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with nitriles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
- C08F220/286—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/14—Coagulation
- C08C1/145—Heat-sensitising agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/14—Coagulation
- C08C1/15—Coagulation characterised by the coagulants used
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- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/02—Hydrogenation
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/04—Oxidation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
- C08F220/44—Acrylonitrile
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
- C08F4/26—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of manganese, iron group metals or platinum group metals
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- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages
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- C—CHEMISTRY; METALLURGY
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- C08F2810/00—Chemical modification of a polymer
Definitions
- the present invention relates to a process for producing PEG acrylate-HNBR copolymer which exhibits excellent processability by latex hydrogenation of PEG acrylate-NBR latex to afford PEG acrylate-HNBR latex and subsequent coagulation.
- Nitrile rubbers in particular hydrogenated nitrile rubbers, play a substantial role.
- Nitrile rubbers (“NBR”; nitrile rubber copolymer) are to be understood as meaning the rubbers which are co- or terpolymers of at least one a,b-unsaturated nitrile, at least one conjugated diene and optionally one or more further copolymerizable monomers.
- HNBR has an outstanding profile of properties in the form of outstanding oil resistance, good heat resistance and excellent resistance to ozone and chemicals. HNBR also has very good mechanical and performance properties and is characterized by high tear resistance, low abrasion, low permanent deformation after subjection to pressure and tensile stress and good oil resistance but especially by remarkable stability to thermal and oxidative influences.
- EP-A-3333196 discloses hydrogenated nitrile-diene carboxylic ester copolymers containing 0.1% to 20% by weight of a,b-ethylenically unsaturated nitrile units, 15% to 74.9% by weight of conjugated diene units and 25% to 65% by weight of a,b-ethylenically unsaturated carboxylic ester units, wherein at least 15% by weight of the a,b-ethylenically unsaturated carboxylic ester units are derived from a PEG acrylate.
- WO-A-2017/129535 discloses hydrogenated nitrile-butadiene-PEG acrylate copolymers containing 25% to 38% by weight of at least an a,b-ethylenically unsaturated nitrile unit, 40% to 60% by weight of at least one conjugated diene unit and 10% to 25% by weight of at least one PEG acrylate unit.
- WO-A-2015/063162 discloses nitrile-containing copolymers containing 10% to 60% by weight of a,b-ethylenically unsaturated nitrile unit, 31% to 89% by weight of conjugated diene units and 1% to 9% by weight of a,b-ethylenically unsaturated monocarboxylic monoester units.
- This process is described for example in US-A-5,208,296, US-A-5,210,151 and US-A-5,783,625.
- Typical reaction conditions are a reaction temperature of 80°C to 160°C, a hydrogen pressure of 3 000 000 to 8 000 000 pascals, a transition metal catalyst from group 8, 9 or 10 and optionally an organic solvent to introduce the catalyst into the aqueous latex.
- WO-A-2004/009655 discloses a process for producing a hydrogenated polymer comprising the steps of hydrogenating at least one carbon-carbon double bond of an unsaturated polymer in latex in the presence of hydrazine, an oxidizing compound and a catalyst.
- EP-A-1454924 discloses a process for hydrogenating a conjugated diene polymer in the presence of a catalyst system, wherein the conjugated diene polymer is hydrogenated in a latex state.
- WO-A-2013/190371 discloses a process for producing a hydrogenated diene-based polymer, wherein a diene-based polymer is subjected to a metathesis decomposition in a first step and to a hydrogenation in a second step, wherein the diene-based polymer is in the form of an aqueous dispersion and both steps are performed in such an aqueous dispersion and both steps are performed in the presence of at least one catalyst.
- WO-A-2013/190373 discloses a process for producing a hydrogenated diene-based polymer, wherein the diene-based polymer present in aqueous dispersion is subjected to a hydrogenation in the presence of a catalyst, wherein the catalyst is added to the aqueous dispersion of the diene-based polymer in solid form.
- the hydrogenation of nitrile rubbers typically results in an increasing of the Mooney viscosity by a factor of about 2.5 (EP-A-1 921 436).
- the lowest Mooney viscosity of HNBR is thus more than twice that of the nitrile rubber to be hydrogenated, i.e. the so-called NBR feedstock.
- Mooney viscosities of 70 MU are suitable for many applications this high Mooney value causes severe problems during injection moulding.
- the flow properties of the rubber are dependent on the compound viscosity. An excessive compound viscosity can result in insufficient mould filling.
- a method for reducing Mooney viscosity known from the prior art is the performance of a metathesis reaction with the unhydrogenated nitrile rubber.
- WO-A-2003/002613 and EP-A-1826220 disclose a process for producing nitrile rubber, wherein the nitrile rubber is subjected to a metathesis reaction in the presence of a co olefin and a metathesis catalyst.
- a problem addressed by the present invention is accordingly that of providing a process for producing PEG acrylate-HNBR copolymers having improved processing properties while retaining their exceptional vulcanizate and compound properties.
- the solution to the problem provided by the present invention is a process for producing PEG acrylate-HNBR copolymer, characterized in that a PEG acrylate-NBR latex is subjected to a hydrogenation and subsequently a coagulation, characterized in that the PEG acrylate-NBR latex contains (a) 0% to 60% by weight, preferably 15% to 40% by weight, particularly preferably
- R is hydrogen or branched or unbranched C 1 -C 2 o-alkyl, preferably CrC ⁇ -alkyl, particularly preferably CrC ⁇ alkyl and very particularly preferably methyl, ethyl or butyl, n is 1 to 8, preferably 2 to 8, particularly preferably 2 to 5 and very particularly preferably 2 or 3 and R 1 is hydrogen or methyl, preferably methyl.
- the term“copolymer” comprises polymers having more than one monomer unit.
- the PEG acrylate-NBR latex/thePEG acrylate-HNBR latex produced therefrom and the PEG acrylate-HNBR copolymer are for example exclusively derived from the three monomer types (a), (b) and (d) and is therefore a terpolymer.
- copolymer are also for example quaternary polymers, derived from the three monomer types (a), (b) and (c) and a further copolymerizable monomer unit (d).
- PEG acrylate-HNBR copolymer is to be understood as meaning a copolymer containing at least one a,b-ethylenically unsaturated nitrile unit, at least one conjugated diene unit and at least one PEG acrylate unit of general formula (I).
- the term thus also comprises copolymers having two or more a,b- ethylenically unsaturated nitrile monomer units, two or more conjugated diene monomer units and two or more PEG acrylate units of general formula (I).
- the“PEG acrylate-NBR latex” employed in the present invention is an aqueous dispersion of unhydrogenated PEG acrylate-NBR copolymer containing repeating units derived from at least one a,b-ethylenically unsaturated nitrile, at least one conjugated diene and at least one PEG acrylate of general formula (I). a,b-ethylenically unsaturated nitrile
- any known a,b-ethylenically unsaturated nitrile may be employed.
- (C 3 -C 5 )-a ⁇ -ethylenically unsaturated nitriles such as acrylonitrile, o haloacrylonitrile such as for example ochloracrylonitrile and obromacrylonitrile, a- alkylacrylonitrile such as for example methacrylonitrile, ethacrylonitrile or mixtures of two or more a,b-ethylenically unsaturated nitriles.
- Acrylonitrile, methacrylonitrile, ethacrylonitrile or mixtures thereof are particularly preferred.
- Acrylonitrile is very particularly preferred.
- the amount of a,b-ethylenically unsaturated nitrile units is typically in the range from 10% to 60% by weight, preferably 15% to 40% by weight, particularly preferably 15 to 35% by weight, based on the total amount of monomer units in the PEG acrylate-NBR latex.
- conjugated diene forming the conjugated diene unit (b) a conjugated diene of any kind may be employed, in particular conjugated C 4 -Ci 2 -dienes.
- conjugated C 4 -Ci 2 -dienes 1 ,3-Butadiene, isoprene, 2,3-dimethylbutadiene, 1 ,3-pentadiene (piperylene) oder mixtures thereof are particularly preferred.
- 1 ,3-Butadiene and isoprene or mixtures thereof are especially preferred.
- 1 ,3- Butadiene is very particularly preferred.
- the amount of conjugated diene units is typically in the range from 20% to 80% by weight, preferably 30% to 65% by weight and particularly preferably 35 to 60% by weight based on the total amount of monomer units in the PEG acrylate-NBR latex.
- PEG acrylate forming PEG acrylate unit (c) is a PEG acrylate of general formula (I)
- R is hydrogen or branched or unbranched C-rC 2 cralkyl, preferably CrC ⁇ -alkyl, particularly preferably Ci-C 4 -alkyl and very particularly preferably methyl, ethyl or butyl, n is 1 to 8, preferably 2 to 8, particularly preferably 2 to 5 and very particularly preferably 2 or 3 and
- R 1 is hydrogen or methyl, preferably methyl.
- the amount of PEG acrylate units is typically in the range from 10% to 60% by weight, preferably 10% to 50% by weight and particularly preferably 20 to 50% by weight based on the total amount of monomer units in the PEG acrylate-NBR latex.
- the term“(meth)acrylate” iso be understood as meaning“acrylate” and“methacrylate”.
- R 1 in general formula (I) is CH 3 - a methacrylate is concerned.
- PEG acrylate is also abbreviated to PEG-X-(M)A wherein“X” represents the number of repeat ethylene glycol units,“MA” stands for methacrylate and“A” stands for acrylate.
- acrylate units derived from PEG acrylates of general formula (I) are referred as "PEG acrylate unit".
- ethoxy polyethylene glycol acrylate (formula no. 1 ) are for example poly(ethylene glycol) ethyl ether acrylate, ethoxy-PEG acrylate, ethoxy poly(ethylene glycol) monoacrylate or poly(ethylene glycol) monoethyl ether monoacrylate.
- the PEG acrylate-NBR latex contains as PEG acrylate units ethoxy, butoxy or ethylhexyloxy polyethylene glycol (meth)acrylate having 2 to 12 ethylene glycol repeating units, particularly preferably ethoxy or butoxy polyethylene glycol (meth)acrylate having 2 to 5 ethylene glycol repeating units and very particularly preferably ethoxy or butoxy polyethylene glycol (meth)acrylate having 2 or 3 ethylene glycol repeating units.
- BDGMA butoxy polyethylene glycol (meth)acrylate
- PEG acrylates are commercially available for example from Arkema under the trade name Sartomer®, from Evonik under the trade name Visiomer® or from Sigma Aldrich.
- the PEG acrylate-NBR latex contains 15% to 35% by weight of a,b-ethylenically unsaturated nitrile units, particularly preferably 20% to 25% by weight of a,b-ethylenically unsaturated nitrile units, 35% to 60% by weight of conjugated diene units, particularly preferably 45% to 60% by weight of conjugated diene units, and 20% to 50% by weight of PEG acrylate units, particularly preferably 20% to 30% by weight of
- PEG acrylate units derived from a PEG acrylate of general formula (I).
- the conjugated diene unit and the PEG acrylate unit may also contain one or more further copolymerizable monomers.
- the PEG acrylate-NBR latex may also contain carboxyl- containing monomers, i.e. copolymerizable carboxylic acids.
- Carboxyl-containing monomers which form carboxyl-containing monomer units are to be understood as meaning copolymerizable monomers which either have at least one carboxyl group in the monomer molecule or which may be reacted in-situ to liberate at least one carboxyl group.
- Contemplated carboxyl-containing copolymerizable monomers include for example a,b- unsaturated monocarboxylic acids, a,b-unsaturated dicarboxylic acids, monoesters thereof or the corresponding anhydrides.
- Preferred carboxyl-containing copolymerizable monomers are a,b-unsaturated monocarboxylic acids and a,b-unsaturated dicarboxylic acids and monoesters thereof.
- a,b-unsaturated monocarboxylic acids include acrylic acid and methacrylic acid.
- epoxy-containing esters such as for example glycidyl methacrylate.
- carboxyl-containing monomers are a,b-unsaturated dicarboxylic acids, preferably maleic acid, fumaric acid, itaconic acid, citraconic acid and mesaconic acid, or a,b-unsaturated dicarboxylic anhydrides, preferably maleic anhydride, fumaric anhydride, itaconic anhydride, citraconic anhydride and mesaconic anhydride.
- a,b-unsaturated dicarboxylic acids preferably maleic acid, fumaric acid, itaconic acid, citraconic acid and mesaconic acid
- a,b-unsaturated dicarboxylic anhydrides preferably maleic anhydride, fumaric anhydride, itaconic anhydride, citraconic anhydride and mesaconic anhydride.
- monoesters of a,b-unsaturated dicarboxylic acids for example in the form of alkyl, preferably Ci-Ci 0 -alkyl, in particular ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl or n-hexyl, cycloalkyl, preferably C 5 -Ci 2 -cycloalkyl, particularly preferably C 6 -C 12 -cycloalkyl, alkylcycloalkyl, preferably C 6 -C 12 -alkylcycloalkyl, particularly preferably C 7 -C 1 o-alkylcycloalkyl, and aryl, preferably C 6 -C 14 -aryl monoesters.
- alkyl preferably Ci-Ci 0 -alkyl
- cycloalkyl preferably C 5 -Ci 2 -cycloalkyl, particularly preferably C 6
- Examples of a,b-unsaturated dicarboxylic acid monoesters comprise
- monoalkyl maleates preferably monomethyl maleate, monoethyl maleate, monopropyl maleate and mono-n-butyl maleate;
- monocycloalkyl maleates preferably monocyclopentyl maleate, monocyclohexyl maleate and monocycloheptyl maleate;
- monoalkyl cycloalkyl maleates preferably monomethyl cyclopentyl maleate and monoethyl cyclohexyl maleate;
- monoaryl maleates preferably monophenyl maleate
- monobenzyl maleates preferably monobenzyl maleate; monoalkyl fumarates, preferably monomethyl fumarate, monoethyl fumarate, monopropyl fumarate and mono-n-butyl fumarate; monocycloalkyl fumarates, preferably monocyclopentyl fumarate, monocyclohexyl fumarate and monocycloheptyl fumarate; monoalkyl cycloalkyl fumarates, preferably monomethyl cyclopentyl fumarate and monoethyl cyclohexyl fumarate; monoaryl fumarates, preferably monophenyl fumarate; monobenzyl fumarates, preferably monobenzyl fumarate; monoalkyl citraconates, preferably monomethyl citraconate, monoethyl citraconate, monopropyl citraconate and mono-n-butyl citraconate; monocycloalkyl citraconates, preferably monocyclopent
- Contemplated copolymerizable monomers further comprise for example esters of a,b- unsaturated monocarboxylic acids.
- esters of a,b-unsaturated monocarboxylic acids are the alkyl esters and alkoxyalkyl esters thereof.
- Alkyl esters in particular C-i-Ci 8 alkyl esters of a,b-unsaturated monocarboxylic acids, are preferred, particular preference being given to alkyl esters, in particular Ci-Ci 8 alkyl esters of acrylic acid or methacrylic acid, in particular methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, n-dodecyl acrylate, methyl methacrylate, ethyl methacrylates, butyl methacrylate and 2-ethylhexyl methacrylate.
- alkyl esters in particular Ci-Ci 8 alkyl esters of acrylic acid or methacrylic acid, in particular methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, tert-butyl acryl
- alkoxyalkyl esters of a,b-unsaturated monocarboxylic acids particularly preferably alkoxy alkyl esters of acrylic acid or methacrylic acid, in particular C 2 -Ci 2 -alkoxyalkyl esters of acrylic acid or of methacrylic acid, very particularly preferably methoxymethyl acrylate, methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate and methoxyethyl (meth)acrylate.
- mixtures of alkyl esters such as for example those recited above, with alkoxyalkyl esters, for example in the form of those recited above.
- cyanoalkyl acrylates and cyanoalkyl methacrylates having 2-12 carbon atoms in the cyanoalkyl group preferably a-cyanoethyl acrylate, b-cyanoethyl acrylate and cyanobutyl methacrylate.
- fluorine-substituted benzyl-containing acrylates or methacrylates preferably fluorobenzyl acrylate and fluorobenzyl methacrylate.
- fluoroalkyl-containing acrylates and methacrylates preferably trifluoroethyl acrylate and tetrafluoropropyl methacrylate.
- amino- containing a,b-unsaturated carboxylic esters such as dimethylaminomethyl acrylate and diethylaminoethyl acrylate.
- di esters of a,b-unsaturated dicarboxylic acids for example in the form of alkyl, preferably CrC 10 -alkyl, in particular ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl or n-hexyl, cycloalkyl, preferably C 5 -C 12 -cycloalkyl, particularly preferably C 6 -C 12 -cycloalkyl, alkylcycloalkyl, preferably C 6 -C 12 -alkylcycloalkyl, particularly preferably C 7 -C 10 -alkylcycloalkyl, and aryl, preferably C 6 -C 14-aryl, diesters, wherein mixed esters may is each case also be concerned.
- alkyl preferably CrC 10 -alkyl, in particular ethyl, n-propyl, isopropyl, n-
- Examples of a,b-unsaturated dicarboxylic acid diesters comprise
- dialkyl maleates preferably dimethyl maleate, diethyl maleate, dipropyl maleate and di-n-butyl maleate;
- dicycloalkyl maleates preferably dicyclopentyl maleate, dicyclohexyl maleate and dicycloheptyl maleate
- dialkylcycloalkyl maleates preferably dimethylcyclopentyl maleate and diethylcyclohexyl maleate
- diaryl maleates preferably diphenyl maleate
- dibenzyl maleates preferably dibenzyl maleate
- dialkyl fumarates preferably dimethyl fumarate, diethyl fumarate, dipropyl fumarate and di-n-butyl fumarate
- dicycloalkyl fumarates preferably dicyclopentyl fumarate, dicyclohexyl fumarate and dicycloheptyl fumarate
- dialkylcycloalkyl fumarates preferably dimethylcyclopentyl fumarate and diethylcyclohexyl fumarate
- diaryl fumarates preferably diphenyl fumarate
- dibenzyl itaconates preferably dibenzyl itaconate
- dialkyl mesaconates preferably diethyl mesaconate.
- the amount of further monomer units in the PEG acrylate-NBR latex is in the range from 0% to 30% by weight, preferably from 1 % to 20% by weight and particularly preferably from 2 to 7% by weight based on the total amount of monomer units in the PEG acrylate- NBR latex.
- the emulsifier typically originates from polymerization and is not subject to any particular limitations. Typically employed are fatty acids, resin acids, a-olefin-sulfonates or SDS (sodium dodecyl sulfate), preferably SDS.
- the solids concentration of the PEG acrylate- NBR latex is 10% to 50% by weight, preferably 15% to 40% by weight and particularly preferably from 15% to 25% by weight based on the total weight of the PEG acrylate-NBR latex.
- the process according to the invention for hydrogenation is typically performed in the presence of at least one hydrogenation catalyst.
- the type of hydrogenation catalyst is not subject to any particular limitations.
- a noble metal-containing hydrogenation catalyst stable toward water is used.
- a catalyst of general formula (A) or (B) is employed
- M is osmium or ruthenium
- X 1 and X 2 are identical or different anionic ligands, preferably halogens, L are identical or different ligands, preferably unladen electron donors, wherein in general formula (A) both ligands L may be connected to one another and form a bidentate ligand,
- R, R 2 , R 3 , R 4 and R 5 are identical or different and are in each case hydrogen, alkyl, preferably Ci-C 30 -alkyl, cycloalkyl, preferably C 3 -C 2 o-cycloalkyl, alkenyl, preferably C 2 -C 2 o-alkenyl, alkynyl, preferably C 2 -C 20 -alkynyl, aryl, preferably C 6 -C 24 -aryl, carboxylate, preferably CrC 20 -carboxylate, alkoxy, preferably CrC 20 -alkoxy, alkenyloxy, preferably C 2 -C 20 -alkenyloxy, alkynyloxy, preferably C 2 -C 20 -alkynyloxy, aryloxy, preferably C 6 -C 24 -aryloxy, alkoxycarbonyl, preferably C 2 -C 20 - alkoxycarbonyl, alkylamino, preferably
- Y is oxygen (O), sulfur (S), an N-R 1 radical or a P-R 1 radical, wherein R 1 is an alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkoxycarbonyl, alkylamino, alkylthio, arylthio, alkylsulfonyl or alkylsulfinyl radical in each case optionally substituted with one or more alkyl, halogen, alkoxy, aryl or heteroaryl radicals and
- R 6 is hydrogen or an alkyl, alkenyl or aryl radical, or a catalyst of general formula (C)
- M is a group VIII transition noble metal, preferably ruthenium, rhodium, osmium or iridium,
- Q is identical or different and is a hydride or another anion
- x is 1 , 2, or 3 and a is in the range from 0 to 3, or a catalyst of general formula (D)
- Q' is a hydride or another anion
- y is 1 , 2, 3 or 4 and
- L is identical or different and is a water-soluble ligand, or a catalyst of general formula (E)
- RhQU (E) wherein Q is a hydrogen or an anion, preferably a halide and particularly preferably a chloride or bromide, wherein L is a ligand of general formula R m B, wherein R is a Ci-C 3 -alkyl, a C -C 8 - cycloalkyl, a C 6 -Ci 5 -aryl or a C 7 -Ci 5 -aralkyl, B is a phosphorus, arsenic, sulfur or sulfur oxide and m is 2 or 3, preferably 2 when B is sulfur or sulfur oxide and 3 when B is phosphorus or arsenic, and wherein x is 2, 3 or 4, preferably X is 3 when Q is a halogen and 4 when Q is a hydrogen.
- the hydrogenation of the PEG acrylate-NBR latex is carried out in the presence of a catalyst of general formula (B), wherein M is ruthenium and L is an N-hetrocyclic carbene (NHC) ligand.
- a catalyst of general formula (B) wherein M is ruthenium and L is an N-hetrocyclic carbene (NHC) ligand.
- the hydrogenation of the PEG acrylate- NBR latex is carried out in the presence of 1 ,3-bis(2,4,6-trimethy!phenyl)-2- imidazolidinylidene)dichloro(o-isopropoxyphenylmethylene)ruthenium.
- the amount of employed hydrogenation catalyst is typically 0.01 to 0.2 phr, preferably 0.2 to 0.1 phr.
- the PEG acrylate-HNBR latex according to the invention may be admixed with one or more aging inhibitors. Phenolic, aminic and other aging inhibitors are suitable therefor.
- Suitable phenolic aging inhibitors are alkylated phenols, styrenated phenol, sterically hindered phenols such as 2,6-di-tert-butylphenol, 2,6-di-tert-butyl-p-cresol (BHT), 2,6-di- tert-butyl-4-ethylphenol, ester-containing sterically hindered phenols, thioether-containing sterically hindered phenols, 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol) (BPH) and sterically hindered thiobisphenols.
- BHT 2,6-di-tert-butylphenol
- BHT 2,6-di-tert-butyl-p-cresol
- BPH 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol)
- thiobisphenols 2,2'-methylene-bis-(4-methyl-6-ter
- aminic aging inhibitors for example mixtures of diaryl-p-phenylenediamines (DTPD), octylated diphenylamine (ODPA), phenyl-o naphthylamine (PAN), phenyl-3-naphthylamine (PBN), preferably those based on phenylenediamine, are also employed.
- phenylenediamines are N-isopropyl- N'-phenyl-p-phenylenediamine, N-1 ,3-dimethylbutyl-N'-phenyl-p-phenylenediamine
- aging inhibitors include phosphites such as tris(nonylphenyl)phosphite, polymerized 2,2,4-trimethyl-1 ,2-dihydroquinoline (TMQ), 2-mercaptobenzimidazole (MBI), methyl-2- mercaptobenzimidazole (MMBI), zinc methylmercaptobenzimidazole (ZMMBI).
- TMQ 2,2,4-trimethyl-1 ,2-dihydroquinoline
- MBI 2-mercaptobenzimidazole
- MMBI methyl-2- mercaptobenzimidazole
- ZMMBI zinc methylmercaptobenzimidazole
- TMQ, MBI and MMBI are known as suitable aging inhibitors for non-hydrogenated nitrile rubbers subjected to peroxidic vulcanization.
- the latex is adjusted to a pH known to those skilled in the art, namely by addition of a base, preferably ammonia or sodium or potassium hydroxide, or an acid, preferably sulfuric acid or acetic acid.
- a base preferably ammonia or sodium or potassium hydroxide
- an acid preferably sulfuric acid or acetic acid.
- the coagulation is performed using at least one salt selected from the group consisting of aluminium, calcium, magnesium, sodium, potassium and lithium salts.
- Monovalent or divalent anions are typically used as the anions of these salts. Preference is given to halides, particularly preferably chloride, nitrate, sulfate, hydrogencarbonate, carbonate, formate and acetate.
- Suitable salts are for example sodium chloride, potassium chloride, calcium chloride, magnesium chloride, sodium nitrate, potassium nitrate, sodium sulfate, potassium sulfate, sodium hydrogencarbonate, potassium hydrogencarbonate, sodium carbonate, potassium carbonate, aluminium sulfate, potassium aluminium sulfate (potassium alum), sodium aluminium sulfate (sodium alum), sodium acetate, calcium acetate and calcium formate. If a water-soluble calcium salt is used for the latex coagulation calcium chloride is preferred.
- the salts are added in an amount of 0.05% to 10% by weight, preferably 0.5% to 8% by weight, particularly preferably 1 % to 5% by weight, based on the solids content of the PEG acrylate-HNBR latex dispersion.
- precipitation assistants may also be employed in the coagulation.
- Suitable precipitation assistants include water- soluble polymers for example. These are nonionic, anionic or cationic.
- nonionic polymeric precipitation assistants are modified celluloses such as hydroxyalkylcellulose or methylcellulose and adducts of ethylene oxide and propylene oxide onto compounds bearing acidic hydrogen.
- compounds bearing acidic hydrogen are: fatty acid, sugars such as sorbitol, mono- and diglycerides of fatty acid, phenol, alkylated phenols, (alkyl)phenol/formaldehyde condensates etc.
- the addition products of ethylene oxide and propylene oxide onto these compounds may have a random or block construction. Among these products preference is given to those whose solubility decreases with increasing temperature. Characteristic clouding temperatures are in the range 0°C to 100°C, in particular in the range from 20°C to 70°C.
- anionic polymeric precipitation assistants are homopolymers and copolymers of (meth)acrylic acid, maleic acid, maleic anhydride etc.
- the Na salt of polyacrylic acid is preferred.
- Cationic polymeric precipitation assistants are typically based on polyamines and on homo- and copolymers of (methy)acrylamide. Polymethacrylamides and polyamines, especially based on epichlorohydrin and dimethylamine, are preferred.
- the amounts of polymeric precipitation assistants are 0.01 to 5 parts by weight, preferably 0.05 to 2.5 parts by weight, based on 100 parts by weight of PEG acrylate-HNBR copolymer.
- the use of other precipitation assistants is also conceivable. However, it is readily possible to perform the process according to the invention in the absence of additional precipitation assistants.
- the PEG acrylate-HNBR latex used for coagulation advantageously has a solids concentration in the range from 1 % to 40%, preferably in the range from 5% to 35% and particularly preferably in the range from 15% to 30% by weight.
- the latex coagulation is performed in the temperature range of 10°C to 1 10°C, preferably from 20°C to 100°C, particularly preferably 50°C to 98°C.
- the latex coagulation may be carried out continuously or discontinuously, preferably continuously.
- the PEG-acrylate-H N B R latex typically separated from unconverted monomers may also be treated with acids in a pH range of ⁇ 6, preferably ⁇ 4, particularly preferably 2, to precipitate the polymer. All mineral and organic acids which allow adjustment to the chosen pH ranges may be used for the precipitation. It is preferable to employ mineral acids for the pH adjustment.
- the polymer is subsequently separated from the dispersion in a manner customary to those skilled in the art. This too may be carried out continuously or discontinuously, preferably continuously.
- the PEG acrylate-HNBR copolymer is typically in the form of so-called crumb.
- the washing of the coagulated HNBR is therefore also known as crumb washing.
- This washing may employ either deionized water or non-deionized water.
- the washing is carried out at a temperature in the range from 15°C to 90°C, preferably at a temperature in the range from 20°C to 80°C.
- the amount of the scrubbing water is 0.5 to 20 parts by weight, preferably 1 to 10 parts by weight and particularly preferably 1 to 5 parts by weight based on 100 parts by weight of PEG acrylate-HNBR copolymer.
- the rubber crumb is subjected to a multistage washing, wherein the rubber crumb is partially dewatered between the individual washing stages.
- the residual moisture of the crumb between the individual washing stages is in the range from 5% to 50% by weight, preferably in the range from 7% to 25% by weight.
- the number of washing stages is typically 1 to 7, preferably 1 to 3.
- the washing is performed discontinuously or continuously. It is preferable to employ a multistage continuous process, wherein countercurrent washing is preferred for sparing use of water. Once washing is complete it is proven advantageous to dewater the PEG acrylate-HNBR copolymer crumb according to the invention.
- Drying of the previously dewatered PEG acrylate-HNBR copolymer according to the invention is carried out in a dryer, suitable examples including fluidized bed dryers or plate dryers.
- the temperatures in the drying are 80°C to 150°C.
- the PEG acrylate-HNBR copolymers produced according to the invention typically have a number-average molecular weight (Mn) of 10 000 g/mol to 2 000 000 g/mol, preferably 50 000 g/mol to 1 000 000 g/mol, particularly preferably 100 000 g/mol to 500 000 g/mol and very particularly preferably 150 000 g/mol to 300 000 g/mol.
- Mn number-average molecular weight
- PEG acrylate-HNBR copolymers according to the invention are those produced by latex hydrogenation of copolymers of acrylonitrile/butadiene/PEG acrylate; acrylonitrile/butadiene/PEG acrylate/acrylic acid, acrylonitrile/butadiene/PEG
- acrylate/methacrylic acid acrylonitrile/butadiene/PEG acrylate/mono-n-butyl maleate
- acrylonitrile/butadiene/PEG acrylate/methyl acrylate acrylonitrile/butadiene/PEG acrylate/ethyl acrylate
- acrylonitrile/butadiene/PEG acrylate/butyl acrylate acrylonitrile/butadiene/PEG acrylate/2-ethylhexyl acrylate
- Very particularly preferred PEG acrylate-HNBR copolymers are those produced by latex hydrogenation of copolymers of acrylonitrile/butadiene/BDGMA, acrylonitrile/butadiene/BDGMA/acrylic acid, acrylonitrile/butadiene/BDGMA/methacrylic acid, acrylonitrile/butadiene/BDGMA/mono-n-butyl maleate, acrylonitrile/butadiene/BDGMA/methyl acrylate, acrylonitrile/butadiene/BDGMA/ethyl acrylate, acrylonitrile/butadiene/BDGMA/butyl acrylate, acrylonitrile/butadiene/BDGMA/2- ethylhexyl acrylate acrylonitrile/butadiene/BDGMA/methoxymethyl (meth)acrylate, acrylonitrile/butadiene/BDGMA/methoxyethyl (me
- the present invention further provides vulcanizable mixtures containing PEG acrylate- HNBR copolymer according to the invention and at least one crosslinker.
- vulcanizable mixtures additionally containing at least one filler are concerned.
- Suitable crosslinkers include for example peroxidic crosslinkers such as bis(2,4- dichlorobenzyl) peroxide, dibenzoyl peroxide, bis(4-chlorobenzoyl) peroxide, 1 ,1-bis-(t- butylperoxy)-3,3,5-trimethylcyclohexane, tert-butyl perbenzoate, 2,2-bis(tert- butylperoxy)butene, 4,4-di-tert-butylperoxy nonylvalerate, dicumyl peroxide, 2,5-dimethyl- 2,5-di(tert-butylperoxy)hexane, tert-butyl cumyl peroxide, 1 ,3-bis(tert- butylperoxyisopropyl)benzene, di-tert-butyl peroxide and 2 , 5-d i methyl-2 , 5-d i (tert- butylperoxy)-3-hexy
- suitable therefor are for example triallyl isocyanurate, triallyl cyanurate, trimethylolpropane tri(meth)acrylate, triallyl trimellitate, ethylene glycol dimethacrylate, butanediol dimethacrylate, zinc diacrylate, zinc dimethacrylate, 1 ,2-polybutadiene or N,N’-m-phenylenebismaleimide.
- the total amount of peroxidic crosslinker(s) is typically in the range from 1 to 20 phr, preferably in the range from 1.5 to 15 phr and particularly preferably in the range from 2 to 10 phr based on the PEG acrylate-HNBR copolymer according to the invention.
- Suitable crosslinkers also include sulfur in elemental soluble or insoluble form or sulfur donors.
- Suitable sulfur donors include for example dimorpholyl disulfide (DTDM), 2- morpholinodithiobenzothiazole (MBSS), caprolactam disulfide, dipentamethylenethiuram tetrasulfide (DPTT) and tetramethylthiuram disulfide (TMTD).
- the crosslinking may also be effected solely with sulfur or sulfur donors.
- crosslinking of the PEG acrylate-HNBR copolymers of the invention may also be effected solely in the presence of the abovementioned additions, i.e. without addition of elemental sulfur or sulfur donors.
- Suitable additions capable of increasing the crosslinking yield include for example dithiocarbamates, thiurams, thiazoles, sulfenamides, xanthates, guanidine derivatives, caprolactams and thiourea derivatives.
- Employable dithiocarbamates include for example: ammonium dimethyldithiocarbamate, sodium diethyldithiocarbamate (SDEC), sodium dibutyldithiocarbamate (SDBC), zinc dimethyldithiocarbamate (ZDMC), zinc diethyldithiocarbamate (ZDEC), zinc dibutyldithiocarbamate (ZDBC), zinc ethylphenyldithiocarbamate (ZEPC), zinc dibenzyldithiocarbamate (ZBEC), zinc pentamethylenedithiocarbamate (Z5MC), tellurium diethyldithiocarbamate, nickel dibutyldithiocarbamate, nickel dimethyldithiocarbamate and zinc diisononyldithiocarbamate.
- SDEC sodium diethyldithiocarbamate
- SDBC sodium dibutyldithiocarbamate
- ZDMC zinc dimethyl
- thiurams include for example: tetramethylthiuram disulfide (TMTD), tetramethylthiuram monosulfide (TMTM), dimethyldiphenylthiuram disulfide, tetrabenzylthiuram disulfide, dipentamethylenethiuram tetrasulfide and tetraethylthiuram disulfide (TETD).
- TMTD tetramethylthiuram disulfide
- TMTM tetramethylthiuram monosulfide
- TMTM dimethyldiphenylthiuram disulfide
- tetrabenzylthiuram disulfide dipentamethylenethiuram tetrasulfide and tetraethylthiuram disulfide (TETD).
- thiazoles include for example: 2-mercaptobenzothiazole (MBT), dibenzothiazyl disulfide (MBTS), zinc mercaptobenz
- sulfenamide derivatives include for example: N-cyclohexyl-2-benzothiazyl sulfenamide (CBS), N-tert-butyl-2-benzothiazyl sulfenamide (TBBS), N,N'-dicyclohexyl-2-benzothiazyl sulfenamide (DCBS), 2-morpholinothiobenzothiazole (MBS), N- oxydiethylenethiocarbamyl-N-tert-butyl sulfenamide and oxydiethylenethiocarbamyl-N- oxyethylene sulfenamide.
- CBS N-cyclohexyl-2-benzothiazyl sulfenamide
- TBBS N-tert-butyl-2-benzothiazyl sulfenamide
- DCBS N,N'-dicyclohexyl-2-benzothiazyl sulfenamide
- MFS 2-morpholinothi
- Employable xanthates include for example: sodium dibutyl xanthate, zinc isopropyl dibutyl xanthate and zinc dibutyl xanthate.
- Employable guanidine derivatives include for example: diphenylguanidine (DPG), Di-o-tolylguanidine (DOTG) and o-tolyl biguanide (OTBG).
- Employable dithiophosphates include for example: zinc dialkyldithiophosphates (chain length of alkyl radicals C2 to C16), copper dialkyldithiophosphates (chain length of alkyl radicals C2 to C16) and dithiophosphoryl polysulfide.
- Employable caprolactams include for example dithiobiscaprolactam.
- Employable thiourea derivatives include for example N,N'-diphenylthiourea (DPTU), diethylthiourea (DETU) and ethylenethiourea (ETU).
- Additions that are likewise suitable include for example: zinc diamine diisocyanate, hexamethylenetetramine, 1 ,3- bis(citraconimidomethyl)benzene and cyclic disulfanes.
- crosslinking agents may be employed either individually or in mixtures. It is preferable to employ the following substances for the crosslinking of the PEG acrylate-HNBR copolymer according to the invention: sulfur, 2- mercaptobenzothiazole, tetramethylthiuram disulfide, tetramethylthiuram monosulfide, zinc dibenzyldithiocarbamate, dipentamethylenethiuram tetrasulfide, zinc dialkydithiophosphate, dimorpholyl disulfide, tellurium diethyldithiocarbamate, nickel dibutyldithiocarbamate, zinc dibutyldithiocarbamate, zinc dimethyldithiocarbamate and dithiobiscaprolactam.
- crosslinking agents and the additions recited above may in each case be employed in amounts of 0.05 phr to 10 phr, preferably 0.1 phr to 8 phr, in particular 0.5 phr to 5 phr, (single metered addition in each case based on the active substance) based on the PEG acrylate-HNBR copolymer according to the invention.
- crosslinking agents and additions recited above it may also be useful to co-use in the sulfur crosslinking further inorganic or organic substances, for example: zinc oxide, zinc carbonate, lead oxide, magnesium oxide, calcium oxide, saturated or unsaturated organic fatty acids and zinc salts thereof, polyalcohols, amino alcohols, for example triethanolamine, and amines, for example dibutylamine, dicyclohexylamine, cyclohexylethylamine, polyamines and polyetheramines.
- inorganic or organic substances for example: zinc oxide, zinc carbonate, lead oxide, magnesium oxide, calcium oxide, saturated or unsaturated organic fatty acids and zinc salts thereof, polyalcohols, amino alcohols, for example triethanolamine, and amines, for example dibutylamine, dicyclohexylamine, cyclohexylethylamine, polyamines and polyetheramines.
- Such vulcanizable mixtures may optionally also contain one or more additives and fibrous materials familiar to those skilled in the art for rubbers. These comprise ageing inhibitors, reversion inhibitors, light stabilizers, antiozonants, processing assistants, mould release agents, plasticizers, mineral oils, tackifiers, blowing agents, dyes, pigments, waxes, resins, extenders, fillers, for example barium sulfate, titanium dioxide, zinc oxide, calcium oxide, calcium carbonate, magnesium oxide, aluminium oxide, iron oxide, aluminium hydroxide, magnesium hydroxide, aluminium silicates, diatomaceous earth, talc, kaolins, bentonites, carbon nanotubes, graphene, Teflon (the latter preferably in powder form), or silicates, carbon blacks, silicas, pyrogenic silica, silica, silanized silica, natural products, for example alumina, kaolins, wollastonite, organic acids, vulcanization retarders, metal oxide
- Contemplated filler activators include in particular organic silanes, for example vinyltrimethyloxysilane, vinyldimethoxymethylsilane, vinyltriethoxysilane, vinyltris(2- methoxyethoxy)silane, N-cyclohexyl-3-aminopropyltrimethoxysilane, 3- aminopropyltrimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, trimethylethoxysilane, isooctyltrimethoxysilane, isooctyltriethoxysilane, hexadecyltrimethoxysilane or (octadecyl)methyldimethoxysilane.
- organic silanes for example vinyltrimethyloxysilane, vinyldimethoxymethylsilane, vinyltriethoxysilane, vinyltris(2- methoxye
- Filler activators further include for example surface- active substances such as triethanolamine and ethylene glycols having molecular weights of 74 to 10 000 g/mol.
- the amount of filler activators is typically 0 to 10 parts by weight based on 100 parts by weight of the PEG acrylate-HNBR copolymer according to the invention.
- the total amount of additives and fibres is typically in the range from 1 to 300 parts by weight based on 100 parts by weight of the PEG acrylate-HNBR copolymer according to the invention.
- the present invention further provides a process for producing vulcanizable mixtures containing PEG acrylate-HNBR copolymer according to the invention by mixing the PEG acrylate-HNBR copolymer according to the invention with at least one crosslinker and the optionally present further components.
- This mixing operation may be performed in any mixing apparatuses customary in the rubber industry, for example internal mixers, Banbury mixers or roller mills.
- the sequence of metered addition may be readily determined by those skilled in the art through suitable experiments.
- Process A Production in internal mixer
- Internal mixers with intermeshing rotor geometry are preferred.
- the internal mixer is charged with the PEG acrylate-HNBR copolymer according to the invention in bale form and the bales are comminuted.
- the fillers and additives are added.
- Mixing is carried out under temperature control with the proviso that the mixture is held at a temperature in the range from 80°C to 150°C for a suitable time.
- the further mixture constituents are added, such as optionally stearic acid, antioxidants, plasticizers, white pigments (for example titanium dioxide), dyes and other processing aids.
- the internal mixer is ventilated and the shaft is cleaned.
- the internal mixer is emptied to obtain the vulcanizable mixture. Suitable periods are to be understood as meaning a few seconds to a few minutes.
- the crosslinking chemicals may either be incorporated by mixing in a separate step in a roller mill, especially when mixing is performed at an elevated mixing temperature, or added directly into the internal mixer. It must be ensured that the mixing temperature is below the reaction temperature of the crosslinking chemicals.
- vulcanizable mixtures may be evaluated in customary fashion, for example via Mooney viscosity, via Mooney scorch or via a rheometer test.
- process B Production on the roller mill
- the the PEG acrylate-HNBR copolymer according to the invention is applied to the roller first. Once a homogeneous milled sheet has been formed, the fillers, plasticizers and other additives with the exception of the crosslinking chemicals are added. After incorporation of all components by mixing, the crosslinking chemicals are added and incorporated by mixing. The mixture is then incised three times on the right and three times on the left and toppled over 5 times. The finished milled sheet is milled to the desired thickness and subjected to further processing according to the desired test methods.
- the invention further provides the process for producing vulcanizates, preferably as mouldings, containing PEG acrylate-HNBR copolymer according to the invention (vulcanization), characterized in that it comprises subjecting the vulcanizable mixture containing PEG acrylate-HNBR copolymer according to the invention to a vulcanization, preferably in a moulding process and more preferably at temperatures in the range from 100°C to 250°C, particularly preferably at temperatures in the range from 120°C to 250°C and very particularly preferably temperatures in the range from 130°C to 250°C.
- the vulcanizable mixtures are subjected to further processing with calenders, rollers or extruders.
- the preformed mass is then vulcanized in presses, autoclaves, hot air systems or in so-called automatic matt vulcanization plants ("Auma"), wherein temperatures in the range from 100°C to 250°C have proven preferred, temperatures in the range from 120°C to 250°C have proven particularly preferred and temperatures in the range from 130°C to 250°C have proven very particularly preferred.
- the vulcanization time is typically 1 minute to 24 hours and preferably 2 minutes to 1 hour. Depending on the shape and size of the vulcanizates, a second vulcanization by reheating may be necessary to achieve complete vulcanization.
- the invention further provides the thus obtainable vulcanizates based on the PEG acrylate-HNBR copolymer according to the invention.
- the invention also provides for the use of the vulcanizates based on the the PEG acrylate-HNBR copolymers according to the invention for producing mouldings selected from the group consisting of belts, seals, rollers, shoe components, hoses, damping elements, stators and cable sheaths, preferably belts and seals.
- the invention accordingly provides vulcanizates as mouldings containing PEG acrylate- HNBR copolymer according to the invention which are preferably selected from belts, seals, rollers, shoe components, hoses, damping elements, stators and cable sheaths, particularly preferably belts and seals.
- the advantage of the invention is in particular that the PEG acrylate-HNBR copolymers according to the invention have an unexpectedly low Mooney viscosity and are thus particularly suitable for further processing, in particular for producing vulcanizates.
- Polystay 29 Styrenated diphenylamine (commercially available from
- Disponil ® SDS G sodium lauryl sulfate (commercially available from BASF)
- MBC Monochlorobenzene
- TPP Triphenylphosphine
- the glass transition temperature was obtained by means of a DSC measurement according to ASTM E 1356-03 or according to DIN 53765. To this end, between 10 mg and 15 mg of the sample were weighed into an aluminium boat and sealed. The boat was heated twice from -150°C to 150°C at a heating rate of 10 K/min in a DSC instrument from TA Instruments. The glass transition temperature was determined from the second heating curve by the standard mean value method.
- the RDB content (residual double bond content) in % is determined by the following FT- IR measurement: the IR spectra of the nitrile-butadiene copolymer before, during and after the hydrogenation are recorded by means of an AVATAR 360 Thermo Nicolet FT-IR spectrometer IR instrument. To this end a monochlorobenzenic solution of the nitrile- butadiene copolymer is applied to an NaCI platelet, dried to a film and analysed. The degree of hydrogenation is determined by FT-IR analysis according to the ASTM D 567095 method.
- Molecular weight is determined by gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- a modular system comprising a Shodex RI-71 differential refracto meter, S 5200 autosampler (from SFD), column oven (ERC-125), Shimadzu LC 10 AT pump and a column combination of 3 PLgel 10 pm Mixed B 300x7.5 mm from Agilet was used.
- the solvent used was tetrahydrofuran; the molecular weights present are based on polystyrene standards from PSS (Mainz).
- the finished THF sample solutions are filtered through syringe filters having 0.45 pm PTFE membranes and diameter 25 mm. The measurements were conducted at 40°C and a flow rate of 1 ml/min in tetrahydrofuran.
- the molecular parameters such as number-average molecular weight M n , mass-average molecular weight M w and the resulting polydispersity index PDI are determined from the Rl signal by means of the "Empower 2 data base” software from Waters.
- the nitrogen content for determining ACN content in the nitrile rubbers is determined by Vario EL cube. Combustion of the amount weighed out in the CHN machine at about 1150°C in the presence of oxidation catalysts and oxygen, aliquoting of the combustion gases, absorption of the disruptive components and detection of N 2 by thermal conductivity measurement cell (TCD).
- TCD thermal conductivity measurement cell
- microstructure and the termonomer content of the individual polymers were determined by means of 1 H-NMR (instrument: Bruker DPX400 with TopSpin 1.3 software, measurement frequency 400 MHz, solvent 1 ,1 ,2,2-tetrachloroethane-d2).
- the noble metal content (Rh or Ru) of the HNBR was determined using a sample amount of 0.5 g of HNBR which was ashed at 550°C in a platinum crucible. The residue was dissolved in hydrochloric acid and diluted with water. The content of ruthenium and rhodium was determined by ICP-OES (inductively coupled plasma optical emission spectrometry) at the characteristic wavelengths for ruthenium and rhodium. Calibration was carried out with acidic solutions of the corresponding metals at the specified wavelengths. Before determination of the content of the samples the signal heights and the sample concentrations were adapted in order to be able to perform the measurement in the linear region of the calibration curve.
- the content of emulsifier is determined from the precipitation serum of the dissolved HNBR precipitated with methanol by gas chromatography (GC). To this end, the emulsifiers in the precipitation serum are initially silylated and subsequently analyzed using a gas chromatograph having a flame ionization detector coupled to a mass spectrometer.
- GC gas chromatography
- Mooney viscosity values (ML1 +4@100°C) are in each case determined by means of a shearing disc viscometer according to ASTM D1646-07.
- the vulcanization behaviour of the mixtures/the crosslinking density was measured with a moving die rheometer (MDR 2000E), measurement being carried out for 30 minutes at 180°C at an angle of 0.5° and an oscillation frequency of 1.7 Hz.
- Hardness was determined according to ASTM D2240-81 using a Durometer.
- dumbbell-shaped test specimens as used for tensile testing were stored in IRM903 at 150°C for 168 hours according to DIN ISO 1817. The samples were subsequently measured and weighed and volume swelling and mass increase were determined. This was followed by determination of tensile strength and elongation according to ASTM D2240-81.
- “Delta S” is“S max - S min” “M 10” modulus at 10% elongation, measured at RT “M 25” modulus at 25% elongation, measured at RT “M 50” modulus at 50% elongation, measured at RT “M 100” modulus at 100% elongation, measured at RT “M 300” modulus at 300% elongation, measured at RT
- NBR latex and PEG acrylate-NBR latex Production of the nitrile rubber latices L1 and L2 employed in the following series of examples was carried out according to the base formulation reported in table 1 , wherein all input materials are reported in percent by weight based on 100% by weight of the monomer mixture (phm). Table 1 also specifies the respective polymerization conditions. Table 1 : Polymerization constituents and conditions for production of the nitrile rubber latices (L1 and L2) (inventive examples marked with an asterisk * ).
- nitrile rubber latices were carried out discontinuously in a 20 L autoclave fitted with a stirrer.
- EDTA was used equimolarly based on the Fe-ll. 90% of the total water amount and also the emulsifier were initially charged in the autoclave and purged with a nitrogen stream. Subsequently, the destabilized monomers and the amount of the molecular weight regulator t-DDM reported in table 1 were added and the reactor was closed. After thermostatting the reactor contents the polymerizations were initiated by addition of the premix solutions and of para-hydroxypinane (Glidox ® 500).
- the progress of the polymerization was monitored by gravimetric conversion determinations. Upon achieving the target conversion the polymerization was terminated by addition of an aqueous solution of diethylhydroxylamine. Unconverted monomers and other volatile constituents were removed by steam distillation. Characterization of the material with reference to the Mooney viscosity, the ACN content, the termonomer content and the glass transition temperature was carried out using the sample precipitated with CaC -
- the previously synthesized nitrile rubbers were in each case subjected to a solution hydrogenation and a latex hydrogenation.
- Latex hydrogenation Hydrogenation of L1 and L2 (inventive)
- Reactor temperature 120°C
- Reaction time 1 - 3 hours (until RDB is ⁇ 1 %)
- the catalyst was dissolved in 5 - 15 mL of toluene and transferred into a pressure burette.
- the nitrile rubber latices L1 and L2 were purged with H 2 (23°C, 2 MPa) three times in the reactor with vigorous stirring.
- the reactor was subsequently heated to a starting temperature of 100°C at a stirrer speed of 600 min 1 and the catalyst solution was injected into the reactor via the glass burette using nitrogen.
- the hydrogen pressure was increased stepwise to 8.4 MPa and the internal reactor temperature was adjusted to 120°C after the reaction had started.
- the reaction was terminated after 1 or 2 hours upon achieving an RDB content of ⁇ 1 % by releasing the hydrogen pressure.
- Solids concentration 12-13% by weight of polymer in MCB Reactor temperature: 137-140°C
- Catalyst & loading Wilkinson’s catalyst: 0.065 phr; Co-catalyst: triphenylphosphine: 1.0 phr
- the nitrile rubber solution was purged with H 2 (23°C, 2 MPa) three times with vigorous stirring.
- the temperature of the reactor was increased to 100°C and the H 2 pressure was increased to 6 MPa.
- 123.9 g of a chlorobenzenic solution of Wilkinson’s catalyst (0.065 phr) and triphenylphosphine (1 phr) were added and the pressure was raised to 8.4 MPa while the reactor temperature was adjusted to 137-140°C. Both parameters were kept constant during the reaction.
- the progress of the reaction was monitored by measurement of the residual double bond content (RDB) by IR spectroscopy. The reaction was terminated after 3 hours upon achieving an RDB content of ⁇ 1 % by releasing the hydrogen pressure.
- RDB residual double bond content
- the hydrogenated nitrile rubber thus formed was isolated from the solution by steam coagulation.
- the chlorobenzenic solution was diluted to a polymer content of 7% by weight and continuously metered into a stirred glass reactor filled with water and preheated to 100°C. Steam was simultaneously introduced into the coagulation water at a pressure of 0.5 bar.
- the thus precipitated polymer crumb was roughly dewatered and subsequently dried to a constant weight under vacuum at 55°C.
- HNBR compositions All HNBR compositions were produced on a mixing mill.
- the diameter of the rollers was 80 mm, the length 200 mm.
- the rollers were preheated to 40°C, the speed of the front roller was 16.5 rpm and the speed of the rear roller was 20 rpm thus achieving a friction of 1 :1.2.
- the rubber was initially charged and mixed for one (1 ) minute until a smooth milled sheet was formed. This was followed by incorporation of initially the carbon black, then the additives and finally the crosslinking chemicals by mixing.
- the mixing time was 5 to 8 minutes in total.
- S’ min is the minimum torque of the crosslinking isotherm
- S’ max is the maximum torque of the crosslinking isotherm
- Delta S’ is“S max - S min”
- HNBR and PEG acrylate-HNBR copolymers produced by latex hydrogenation exhibit a lower Mooney viscosity in the unvulcanized polymer than the types produced by solution hydrogenation.
- Hydrogenated nitrile rubber copolymers having lower Mooney viscosities have the advantage that they are easier to process.
- Vulcanizates of the latex-hydrogenated nitrile rubber copolymers exhibit a comparable hardness and volume swelling to the solution-hydrogenated nitrile rubber copolymers and are thus comparable in terms of their profile of properties and field of application.
- Production of PEG acrylate-HNBR copolymers is possible both by solution hydrogenation and by latex hydrogenation.
- latex hydrogenation has the clear advantage over solution hydrogenation that in the case of hydrogenated nitrile rubber copolymers produced by latex hydrogenation the Mooney viscosity is markedly lower than in the case of PEG acrylate-HNBR copolymer produced by solution hydrogenation
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Abstract
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US3700637A (en) | 1970-05-08 | 1972-10-24 | Shell Oil Co | Diene-nitrile rubbers |
DE2539132C2 (de) | 1975-09-03 | 1987-04-09 | Bayer Ag, 5090 Leverkusen | Verwendung hydrierter Dien-Copolymere als temperaturbeständige Materialien auf dem Dichtungssektor |
US4337329A (en) | 1979-12-06 | 1982-06-29 | Nippon Zeon Co., Ltd. | Process for hydrogenation of conjugated diene polymers |
JPS5682803A (en) | 1979-12-08 | 1981-07-06 | Nippon Zeon Co Ltd | Preparation of hydrogenated conjugated polymer |
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EP3330294B1 (fr) * | 2016-12-05 | 2020-08-26 | Dayco Europe S.R.L. | Courroie de transmission de puissance |
EP3333196B1 (fr) | 2016-12-09 | 2020-05-13 | ARLANXEO Deutschland GmbH | Copolymère d'ester nitrile-diène d'acide carboxylique hydrogéné |
-
2019
- 2019-11-26 JP JP2021527950A patent/JP7513610B2/ja active Active
- 2019-11-26 US US17/414,634 patent/US11827726B2/en active Active
- 2019-11-26 CN CN201980083147.2A patent/CN113166280B/zh active Active
- 2019-11-26 EP EP19808598.7A patent/EP3898707A1/fr active Pending
- 2019-11-26 WO PCT/EP2019/082612 patent/WO2020126353A1/fr unknown
- 2019-11-26 KR KR1020217014783A patent/KR20210104663A/ko unknown
- 2019-12-13 TW TW108145681A patent/TWI837246B/zh active
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CN113166280B (zh) | 2023-07-11 |
WO2020126353A1 (fr) | 2020-06-25 |
TW202033578A (zh) | 2020-09-16 |
US11827726B2 (en) | 2023-11-28 |
CN113166280A (zh) | 2021-07-23 |
TWI837246B (zh) | 2024-04-01 |
JP7513610B2 (ja) | 2024-07-09 |
JP2022510814A (ja) | 2022-01-28 |
US20220073666A1 (en) | 2022-03-10 |
KR20210104663A (ko) | 2021-08-25 |
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